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Published on: March 30, 2017
Superfluid state of repulsively interacting three-component fermionic atoms in optical lattices
Kensuke Inaba1, Sei-ichiro Suga
1NTT Basic Research Laboratories, NTT Corporation, Atsugi 243-0198, Japan.
Abstract:
We investigate the superfluid state of repulsively interacting three-component (color) fermionic atoms in optical lattices. When the anisotropy of the three repulsive interactions is strong, atoms of two of the three colors form Cooper pairs and atoms of the third color remain a Fermi liquid. An effective attractive interaction is induced by density fluctuations of the third-color atoms. This superfluid state is stable against changes in filling close to half filling. We determine the phase diagrams in terms of temperature, filling, and the anisotropy of the repulsive interactions.
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